diff -r 6b3523f81f42 -r 26744ad37953 cubicweb/toolsutils.py
--- a/cubicweb/toolsutils.py	Fri Apr 05 17:21:14 2019 +0200
+++ b/cubicweb/toolsutils.py	Fri Apr 05 17:58:19 2019 +0200
@@ -16,8 +16,6 @@
 # You should have received a copy of the GNU Lesser General Public License along
 # with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
 """some utilities for cubicweb command line tools"""
-from __future__ import print_function
-
 
 # XXX move most of this in logilab.common (shellutils ?)
 
@@ -39,8 +37,6 @@
     def symlink(*args):
         raise NotImplementedError
 
-from six import add_metaclass
-
 from logilab.common.clcommands import Command as BaseCommand
 from logilab.common.shellutils import ASK
 
@@ -239,8 +235,7 @@
         return cls
 
 
-@add_metaclass(metacmdhandler)
-class CommandHandler(object):
+class CommandHandler(object, metaclass=metacmdhandler):
     """configuration specific helper for cubicweb-ctl commands"""
 
     def __init__(self, config):